Calcium chloride is a common chemical compound used in a variety of industrial applications, including as a de-icing agent on roads, in food processing, and in water treatment. While it's generally considered safe for its intended uses, consuming water with high levels of calcium chloride can be dangerous and pose several health risks. Here are some of the dangers associated with drinking water with calcium chloride:

1. Gastrointestinal problems: Consuming water with high levels of calcium chloride can cause stomach cramps, nausea, and diarrhea. This is because calcium chloride is highly acidic and can irritate the lining of the digestive tract, leading to inflammation and discomfort.
2. Dehydration: Calcium chloride can have a dehydrating effect on the body, which can be dangerous for people who are already dehydrated or have underlying health conditions. It can cause excessive thirst, dry mouth, and other symptoms of dehydration.
3. Electrolyte imbalances: Calcium chloride can interfere with the body's electrolyte balance, which can lead to serious health problems. Electrolytes are essential minerals that help regulate the body's fluid balance, muscle function, and other vital functions. Consuming too much calcium chloride can disrupt this delicate balance, leading to muscle weakness, heart palpitations, and other symptoms.
4. Kidney damage: High levels of calcium chloride in water can also lead to kidney damage, particularly in people who already have kidney problems. The kidneys are responsible for filtering waste products and toxins from the blood, but excessive calcium chloride can cause the kidneys to work harder than they should, leading to damage and reduced function.
5. Cardiovascular problems: In rare cases, consuming water with high levels of calcium chloride can lead to cardiovascular problems, such as irregular heart rhythms and low blood pressure. This is because calcium chloride can interfere with the body's ability to regulate blood flow and heart function.
6. Skin irritation: Calcium chloride can also irritate the skin and mucous membranes, particularly in people with sensitive skin. Exposure to calcium chloride can cause itching, redness, and other symptoms of skin irritation.
7. Respiratory problems: When calcium chloride is added to water, it can produce a fine mist that can be inhaled, leading to respiratory problems. This is particularly dangerous for people with asthma or other respiratory conditions, as it can exacerbate their symptoms and make it difficult to breathe.
8. Reproductive problems: Some studies have suggested that exposure to calcium chloride may be linked to reproductive problems, such as infertility and reduced sperm quality. While more research is needed to confirm these findings, it's important to limit exposure to calcium chloride as a precautionary measure.
9. Environmental concerns: Calcium chloride can also have negative environmental impacts, particularly when it's used as a de-icing agent on roads. It can pollute nearby water sources and harm aquatic life, and it can also damage plants and other vegetation.
   

In conclusion, drinking water with high levels of calcium chloride can be dangerous and pose several health risks. While calcium chloride is generally considered safe for its intended uses, it's essential to avoid consuming water with high levels of this chemical compound. If you suspect your water may be contaminated with calcium chloride, it's important to contact your local water authority and have your water tested to ensure its safety.